The best months to visit Uruguay are December and June. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Uruguay: January 28°C / 76mm; February 30°C / 99mm; March 26°C / 97mm; April 22°C / 101mm; May 16°C / 77mm; June 18°C / 81mm; July 15°C / 87mm; August 17°C / 93mm; September 20°C / 85mm; October 23°C / 115mm; November 26°C / 104mm; December 25°C / 81mm.